63A 4P ATS-W2R 110V/220V front view – PC class three-phase with neutral transfer switch1 / 6

ATS Dual Power Switch

63A 4P Automatic Transfer Switch 110V/220V - PC Class 50ms Three-Phase+N ATS for Commercial Use

The ATS-W2R-4P is a PC class (load level) automatic transfer switch for three-phase systems with neutral (3L+N), rated at 63A and supporting both 110V and 220V AC. All four poles – three phases and neutral – switch simultaneously in 50ms, ensuring complete isolation between sources and eliminating any risk of backfeed. When Source A (mains) fails, the unit instantly transfers the load to a generator or PV inverter; once mains is restored, it automatically reverts to Source A priority without manual intervention. Supports both automatic and manual switching modes to suit diverse installation needs. Built on a motor-driven mechanism housed in a PA6 flame-retardant enclosure, the W2R-4P combines three-phase coverage with neutral switching – essential for balanced load distribution in commercial and medical environments such as hospitals, cold-storage facilities, and data centers.

Key Features

  • 4-pole switching (3 Lines + Neutral simultaneously) – 2 inputs / 1 output
  • PC class (load level) – handles full rated load continuously
  • Fast 50ms (0.05s) transfer time – load interruption under 50ms
  • Dual voltage: supports both 110V and 220V AC three-phase with neutral
  • Auto & manual transfer modes; returns to Source A (mains) automatically
  • Compatible with mains, generator, and PV inverter sources
  • PA6 flame-retardant housing with motor-driven mechanism
  • Neutral switching ensures balanced load distribution in commercial installations

Samples available · OEM pricing on request · Ships worldwide

Technical Specifications

Poles4P (3 Lines + Neutral)
Rated Current63A (Operating Range: 6A – 63A)
Rated Voltage110V / 220V AC
Frequency50/60Hz
PhaseThree-Phase with Neutral
TypePC Class (Load Level)
I/O Configuration2 Inputs / 1 Output
Priority SourceSource A (Mains)
Compatible SourcesMains, Generator, PV Inverter
Switching ModeAuto & Manual
Transfer Time – .05s (50ms)
HousingPA6 Flame-retardant
ApplicationsHospitals, Cold Storage, Data Centers